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;; -*- lexical-binding: t; -*-
(require 'servall-client)
(require 'servall-results)
(defvar servall-wikipedia-save-dir "/tmp/servall-wikipedia")
(defcustom servall-wikipedia-auto-save t
"If nonnil, auto-save wikipedia entry to `servall-wikipedia-save-dir'")
;; wikipedia results
(define-derived-mode servall-wikipedia-results-mode servall-results-mode
"servall-wikipedia-results"
"Mode for showing and selecting wikipedia results"
(setq-local servall-wikipedia-results-query nil))
(defun servall-wikipedia-results-highlight ()
(save-excursion
(goto-char (point-min))
(while (re-search-forward "<span class=\"searchmatch\">\\(.*?\\)</span>" nil t)
(replace-match
(propertize (match-string 1) 'font-lock-face 'match)))))
(defun servall-wikipedia-results-update ()
(let* ((resp (servall-api-wikipedia-search servall-wikipedia-results-query))
(results (alist-get 'search
(alist-get 'query resp)))
(inhibit-read-only t))
(erase-buffer)
(mapc
(lambda (result)
(let ((title (alist-get 'title result)))
(insert
(propertize
(concat "* " title "\n")
'title title))
(insert (alist-get 'snippet result) "\n\n")))
results)
(servall-wikipedia-results-highlight)
(goto-char (point-min))))
(defun servall-wikipedia-search (query)
(interactive "sWikipedia Query: ")
(with-current-buffer (get-buffer-create servall-results-buffer)
(servall-wikipedia-results-mode)
(setq servall-wikipedia-results-query query
servall-results-update-function 'servall-wikipedia-results-update
servall-results-re-search-function 'servall-wikipedia-search
servall-results-open-function 'servall-wikipedia-results-open)
(servall-results-update))
(switch-to-buffer servall-results-buffer))
(defun servall-wikipedia-results-open ()
(interactive)
(when-let ((title (get-text-property (point) 'title)))
(switch-to-buffer-other-window (servall-wikipedia-load title))))
(defun servall-wikipedia-to-name (title)
(replace-regexp-in-string " " "_" title))
;; wikipedia view
(org-link-set-parameters "wiki"
:follow #'servall-wikipedia-open-wikilink
:store #'servall-wikipedia-store-link)
(defun servall-wikipedia-open-wikilink (title)
(let ((prev))
(when (eq major-mode 'servall-wikipedia-view-mode)
(setq servall-wikipedia-history-next title
prev servall-wikipedia-title))
(switch-to-buffer (servall-wikipedia-load title nil prev))))
(defun servall-wikipedia-store-link ()
(when (eq major-mode 'servall-wikipedia-view-mode)
(let ((link (concat "wiki:" servall-wikipedia-title)))
(org-link-add-props :link link :description servall-wikipedia-title)
link)))
(defvar servall-wikipedia-view-mode-map
(let ((map (make-sparse-keymap)))
(setq map (copy-keymap special-mode-map))
(define-key map "g" 'servall-wikipedia-reload)
(define-key map "l" 'servall-wikipedia-history-back)
(define-key map "n" 'org-next-visible-heading)
(define-key map "p" 'org-previous-visible-heading)
(define-key map "r" 'servall-wikipedia-history-forward)
(define-key map "w" 'servall-wikipedia-copy-link-at-point)
map))
(defun servall-wikipedia-view-buffer (title)
(format "*wikipedia %s*" title))
(defun servall-wikipedia-copy-link-at-point ()
(interactive)
(let ((link
(if (org-in-regexp org-link-any-re)
(org-unbracket-string "<" ">"
(or
;; [[target][desc]]
(match-string-no-properties 2)
;; plain link or <...>
(match-string-no-properties 0)))
(format "wiki:%s#%s" servall-wikipedia-title
(org-entry-get (point) "ITEM")))))
(setq link
(replace-regexp-in-string
" " "_"
(replace-regexp-in-string
"^wiki:" "https://en.wikipedia.org/wiki/" link)))
(kill-new link)
(message "Copied: %s" link)))
(defun servall-wikipedia-history-back ()
(interactive)
(if servall-wikipedia-history-prev
(switch-to-buffer
(servall-wikipedia-load servall-wikipedia-history-prev))
(message "No previous entry.")))
(defun servall-wikipedia-history-forward ()
(interactive)
(if servall-wikipedia-history-next
(switch-to-buffer
(servall-wikipedia-load servall-wikipedia-history-next))
(message "No next entry.")))
(define-derived-mode servall-wikipedia-view-mode org-mode
"servall-wikipedia-view"
"Mode for viewing wikipedia entries."
(setq-local buffer-read-only t
servall-wikipedia-title nil
servall-wikipedia-history-prev nil
servall-wikipedia-history-next nil))
(defun servall-wikipedia-reload ()
(interactive)
(let ((prev servall-wikipedia-history-prev)
(next servall-wikipedia-history-next))
(servall-wikipedia-load servall-wikipedia-title t)
(setq servall-wikipedia-history-prev prev
servall-wikipedia-history-next next)))
(defun servall-wikipedia-load (title &optional force prev)
(setq title (alist-get 'title (servall-api-wikipedia-summary title)))
(let* ((buffer-name (servall-wikipedia-view-buffer title))
(buffer (get-buffer buffer-name))
(filename (format "%s/%s.org" servall-wikipedia-save-dir title)))
(unless (and buffer (not force))
(setq buffer (get-buffer-create buffer-name))
(with-current-buffer buffer
(servall-wikipedia-view-mode)
(setq servall-wikipedia-title title
servall-wikipedia-history-prev prev)
(let ((inhibit-read-only t))
(erase-buffer)
(if (and (file-exists-p filename) (not force))
(insert-file-contents filename)
(insert (servall-api-wikipedia-org title))
(servall-wikipedia-fix-tables)
(when servall-wikipedia-auto-save
(servall-touch-new-file filename)
(write-region (point-min) (point-max) filename))))
(goto-char (point-min))))
buffer))
(defun servall-touch-new-file (filename)
"Touch a new file."
(with-temp-buffer (write-file filename)))
(defun servall-wikipedia-open (url-or-title)
(interactive "sUrl or title: ")
(cond ((string-match "http\\(s\\)?://en.wikipedia.org/wiki/\\(.*\\)"
url-or-title)
(servall-wikipedia-open-internal (match-string 2 url-or-title)))
(t (servall-wikipedia-open-internal url-or-title))))
(defun servall-wikipedia-open-internal (title)
(condition-case nil
(servall-wikipedia-open-wikilink title)
(error (servall-wikipedia-search title))))
(define-key servall-wikipedia-view-mode-map "o" 'servall-wikipedia-open)
(define-key servall-wikipedia-view-mode-map "s" 'servall-wikipedia-search)
(defun servall-wikipedia-fix-tables ()
(let ((inhibit-read-only t))
(save-excursion
(goto-char (point-min))
(while (re-search-forward org-table-any-line-regexp nil t)
(org-cycle)
(re-search-forward org-table-border-regexp)))))
(provide 'servall-wikipedia)
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